Introduction of Shihlin Inverter
Introduction of Inverter
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3.5.7 Wiring precautions
Main circuit wiring:
1. Do not connect the power supply wires to the inverter output terminals U/T1-V/T2-W/T3 that are
designed for connecting motors; otherwise, the inverter may be damaged.
2. Please do not mount filtering capacitors, surge absorbers and electromagnetic contactors at the
output end of the inverter.
3. Please do not use electromagnetic contactors or no-fuse switches with an online power to start or
stop the motor.
4. Please ensure that the case of inverter and the motor are grounded to avoid electric shock.
5. To appropriately select the diameter of the main wires and the corresponding wire terminals, the
no-fuse switches and the electromagnetic contactors, please refer to Section 3.6. And if the
inverter is far away from the motor, please employ a wire with larger diameter to ensure the
voltage drop along the wire is within 2V. (The total length of the wire shall not exceed 500 meters)
6. Pressing connection terminals with insulated sleeve shall be utilized for the wiring at the power
source side and the loading side.
7. High voltage still exists between the (+/P)-(-N) terminals shortly after shutting off the power
supply, thus please do not touch them within 10 minutes after the shut off to avoid electric shock.
Control circuit wire arrangement:
1. For wiring of signal input, insulated wires must be used, and the metal mesh of which must be
grounded.
2. For wiring of the control board, wire with a diameter of 0.3~0.75 mm
2
is recommended. For
stripping off the insulating layer please follows the instruction of the following figure.
3. The control board wire (including signal input wire) shall be away from the main circuit board
wire as much as possible. Binding the control board wire together with the main circuit wire is
strictly forbidden.
4. In the inverter, terminal SD, terminal SE and the terminal 5 are the reference grounds for the inner
power sources isolated from each other.